matching numbers?
Thread Starter
Heel & Toe
Joined: Apr 2007
Posts: 23
Likes: 0
From: tuscaloosa alabama
matching numbers?
my question consists of 2 parts. 1- the numbers on the pad in front of the right valve cover are T0531CKD and 12B680022 my vin # is 1Z37L6S409908 are these matching numbers? also on the top of my tranny it reads GM 3970014. can you tell me what kind of tranny this is by the numbers(ie th350, th400, etc) and also is this the original or numbers matching. sorry if this sounds like a dumb question but im clueless on this stuff.thanks and if you cant tell the tranny type by these numbers how can you tell? thanks for yalls help.
Burning Brakes
Joined: Jun 2004
Posts: 872
Likes: 3
From: Cortlandt Manor New York
Those numbers do not match. The last 6 digits of the VIN# are supposed to appear on the stamp pad for an original engine. I suggest you go to the NCRS website and get the specifications guide for your car. This will contain all the numbers information that you could ever want.
Numbers matching means many things to many people. In most cases it refers to a vehicle having an original drive train-engine, trans, rear. There are numbers on many other parts on the car which are judged by the NCRS as to the correctness of the parts. EG: carbutetor, alternator, wheels, brake calipers, etc., etc., etc. What does it all mean? Very little unless you have a rare and very collectible car, in which case you have to worry about fakes. If it is worth enough it can and will be faked, many times to the point where it is undetectible.
Numbers matching means many things to many people. In most cases it refers to a vehicle having an original drive train-engine, trans, rear. There are numbers on many other parts on the car which are judged by the NCRS as to the correctness of the parts. EG: carbutetor, alternator, wheels, brake calipers, etc., etc., etc. What does it all mean? Very little unless you have a rare and very collectible car, in which case you have to worry about fakes. If it is worth enough it can and will be faked, many times to the point where it is undetectible.
Le Mans Master
Joined: Mar 2000
Posts: 9,127
Likes: 2,326
From: Pottsville, PA. USA Home Of America's Oldest Brewery Yuengling
Your car is a 1976 by the vin number. The numbers on the front pad are not for that car.
You car is a L-48 and would have one of the following suffix codes.
CKW L-48 with four speed transmission
CKX L-48 with automatic transmission
CLS L-48 with automatic transmission California
You car is a L-48 and would have one of the following suffix codes.
CKW L-48 with four speed transmission
CKX L-48 with automatic transmission
CLS L-48 with automatic transmission California
Account disabled by user request 5 Jan 09
Joined: Jan 2005
Posts: 261
Likes: 1
my question consists of 2 parts. 1- the numbers on the pad in front of the right valve cover are T0531CKD and 12B680022 my vin # is 1Z37L6S409908 are these matching numbers? also on the top of my tranny it reads GM 3970014. can you tell me what kind of tranny this is by the numbers(ie th350, th400, etc) and also is this the original or numbers matching. sorry if this sounds like a dumb question but im clueless on this stuff.thanks and if you cant tell the tranny type by these numbers how can you tell? thanks for yalls help.
Where are you reading this transmission number from??
The CKD suffix was used for the following ....
CKD 1972 350 Nova 200 L-48 TH350 4-B
CKD 1972 350 Chevelle 175 L-48 TH350 4-Brl
CKD 1972 350 Camaro 200 L-48 TH350 4-Brl
Last edited by FrankVincent; May 18, 2007 at 10:31 AM.
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Team Owner
Joined: Jun 2000
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From: Southbound
Cruise-In II Veteran
Number is for a Tonawanda (New York) assembled 350 small block, not Corvette, assembed on May 31st. Block casting date will provide the year. This number was stamped on the engine at the engine assembly plant to identify the engine and application.
The Tonawanda facility supplied Corvette big block engines, but all Corvette small block engines came from Flint (Michigan).
VIN derivative of the car this engine was originally installed in. 1 indicates Chevrolet; 2 indicates the year (could be 72 or 82); B indicates the assembly plant for the car; 6 indicates the car line series for that year; 80022 is the consecutive unit number of the original vehicle.
Your small block is a Chevrolet engine, but not Corvette.
The Tonawanda facility supplied Corvette big block engines, but all Corvette small block engines came from Flint (Michigan).
12B680022...
Your small block is a Chevrolet engine, but not Corvette.
Race Director
Joined: Apr 1999
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From: NM
